I have no problem with OC as a tactic in the right circumstances, and
I have no problem with people who casually open carry as part of their
normal routine. The problem is that I think the circumstances where it’s
beneficial as a tactic are much much more narrow than most people open
carrying are willing to admit. A lot of the benefits you mention an come
about from mere casual OC, and don’t require putting activism or
organization behind it, or open carrying some place just to make a
point, or to get attention.

As always if you're going to do an activity as a political activist one should have a goal as to what your activity will result in.